Xi Jinping is scheduled to press Donald Trump in Washington today to halt weapons transfers to Taiwan, according to Reuters. This is not a new demand. Beijing has held the $14 billion Taiwan arms sale hostage against this summit since September 19, when Trump described the shipments as "chips to play" in his own negotiation. Beijing's ask on September 23 was that Washington delay the sale, per the Taiwan Strait register. Today's ask is that Washington stop it. The distance between those two positions is the concession Beijing wants entered into the summit record before either leader sits down: not a pause, an end.

The commander who would carry out a Taiwan operation is not the commander running the People's Liberation Army this week. The Communist Party expelled two senior military officials over corruption and disloyalty on September 22, and U.S. News reported September 23 that Xi's serial purges of top commanders have raised doubts inside Washington about the PLA's war-waging ability. A government asking a rival to disarm its neighbor is not the same government whose own general staff it just gutted twice in a month. If Xi wins the freeze at the summit table, he wins it with a chain of command he has spent September hollowing out, and Taipei's next arms request becomes the test of whether the freeze survives contact with that fact.